Thanks, just got how to use layout->flowchart, it is quite convenient.
But how to use layout->hierarchial in case I have separate flowcharts in an active editor? I ctrl+a selected all diagrams and then click layout->hierarchial, the consequence is the same as layout->flowchart.
In case you want us to manually select moving nodes, can you provide an easy way to select till end option for us to use? ctrl+a selects all nodes, ctrl+click has to go through each node, that's not convenient.